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Photorefractive composite, spatial light modulator, and hologram display device using the same

a technology of spatial light modulator and hologram display device, which is applied in the direction of photomechanical apparatus, group 3/13 element organic compounds, instruments, etc., can solve the problem that current slms do not have a sufficient modulation speed to realize a display, and achieve the effect of increasing the photorefractive effect and photorefractive speed, increasing the optical modulation effect and optical modulation speed, and increasing the image transformation speed

Active Publication Date: 2013-06-13
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent is about increasing the speed and effectiveness of photorefractive composites, spatial light modulators, and hologram display devices. By using a carborane compound that can fix electrons, the photorefractive speed of the composite can be increased. Additionally, by using a photorefractive composite with increased photorefractive speed, spatial light modulators and hologram display devices can be improved in their optical modulation speed and image transformation speed, respectively.

Problems solved by technology

However, current SLMs do not have a sufficient modulation speed to realize a display.

Method used

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  • Photorefractive composite, spatial light modulator, and hologram display device using the same
  • Photorefractive composite, spatial light modulator, and hologram display device using the same
  • Photorefractive composite, spatial light modulator, and hologram display device using the same

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example embodiment 1

[0094]A photorefractive composite solution was made by resolving PVK:PDCST:ECZ:PCBM: Chemical Formula 2A (o-carborane,Aldrich) with a weight ratio of 49.4:30:20:0.5:0.1 in a toluene solvent. At this point, a weight ratio of the total constituent (PVK:PDCST:ECZ:PCBM: Chemical Formula 2A (o-carborane, Aldrich)) with respect to the toluene solvent was 4:1.

[0095]The photorefractive composite solution was filled between two ITO electrodes separated 100 μm by a spacer. Afterwards, a photorefractive device having a photorefractive layer between the two electrodes was formed by removing the toluene solvent through evaporation.

example embodiment 2

[0096]A photorefractive device was formed by the same method of Example Embodiment 1 except that carborane compound of Chemical Formula 3B was used instead of o-carborane (Chemical Formula 2A).

example embodiment 3

[0097]A photorefractive device was formed by the same method of Example Embodiment 1 except that carborane compound of Chemical Formula 3D was used instead of o-carborane (Chemical Formula 2A).

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Abstract

A photorefractive composite, a spatial light modulator and a hologram display device using the same include at least one carborane compound expressed as the following Chemical Formulae 1A through 1C:wherein the photorefractive composite exhibits photoconductivity and optical nonlinearity.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of priority under 35 U.S.C. §119(e) to Korean Patent Application No. 10-2011-0131115, filed on Dec. 8, 2011, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND[0002]1. Field[0003]Example embodiments relate to photorefractive composites, spatial light modulators, and hologram display devices using the same.[0004]2. Description of the Related Art[0005]In order to realize holograms, studies have been actively conducted about a spatial light modulator (SLM) that uses a photorefractive composite. The photorefractive composite is a material simultaneously having optical nonlinearity and photoconductivity, and a refractive index of which is periodically spatially modulated (spatial modulation of refractive index) due to redistribution of charges generated by light irradiation. The SLM is an apparatus that may modulate intensity and...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G03F7/027G02F1/35G03H1/12G03F7/028G03F7/031
CPCG03F7/028G03F7/001G02F1/35B82Y30/00G03H1/0476G03H1/2294G03H2001/0264G03H2001/183G03H2001/2655G03H2225/25G03H2260/54G03F7/027G03F7/031G03F7/105G03H1/12C08K5/0016C08K5/0041C08K5/01C08L65/00G02B5/32G03H1/268
Inventor HWANG, KYU-YOUNGLEE, GAE-HWANGJUNG, JAE-EUNCHOI, CHIL-SUNG
Owner SAMSUNG ELECTRONICS CO LTD
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